Year	%
1993	9.79
1994	12.39
1995	13.05
1996	11.82
1997	11.82
1998	11.84
1999	13.73
2000	11.85
2001	11.85
2002	11.79
2003	11.6
2004	11.79
2005	11.6
2006	11.6
2007	11.6
2008	11.05
2009	10.43
2010	10.43
2011	8.95
2012	8.96
2014	8.61
2015	12.26
2016	12.85
2017	12.8
2018	12.9
2019	13.56
2020	12.81
2021	11.57